CN212899457U

CN212899457U - Clutch mechanism for driving system and driving system

Info

Publication number: CN212899457U
Application number: CN202022101482.3U
Authority: CN
Inventors: 唐龙华
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-04-06
Anticipated expiration: 2030-09-22

Abstract

The utility model relates to a clutching mechanism for actuating system, including coupling sleeve, release power key, clutch ring, kingpin and clutch gear, clutch gear's both sides all are provided with the kingpin, and the clutch ring overlaps the cover and establishes in the outside of kingpin, and the coupling sleeve cover is established in the outside of clutch ring, and the other end of coupling sleeve is connected with actuating system's output shaft, and the release power key is installed between coupling sleeve and clutch ring. The utility model discloses can be under clutch gear's drive, the kingpin promotes the clutch ring and rotates to drive the coupling sleeve and rotate, be convenient for promote the handcart and go, and under the cooperation of releasing the power key, can reduce the resistance that actuating system produced when the hand push, effect convenient to use.

Description

Clutch mechanism for driving system and driving system

Technical Field

The utility model belongs to the technical field of the handcart technique and specifically relates to a clutching mechanism and actuating system for actuating system are related to.

Background

With the development and demand of society, more and more hand-push wheeled vehicles, such as hand-push grass cutters, hand-push golf carts, hand-push snow blowers, hand-push cargo flatbeds, hand-push baby carts and other machines, have the function of electric power assistance. When the motor of the hand-push wheeled vehicle with the driving system is used for assisting to run, the wheeled vehicle can run easily due to the fact that the driving system has a large speed ratio; when the wheeled vehicle is pushed by hand to run, the driving system has a clutch function, so that the resistance of the motor to the wheel is reduced, and a driver can push the wheeled vehicle by hand easily.

A traditional hand-push wheeled vehicle is provided with a driving system without a clutch function, the reduction ratio between a motor and wheels is small, the motor is large, the cost is high, and the advancing resistance is large. And the traditional hand-push wheeled vehicle is provided with a driving system without a clutch function, the output end is only provided with one shaft, the turning resistance is large, the vehicle is not flexible, and the abrasion of wheels is large.

SUMMERY OF THE UTILITY MODEL

To the deficiency that prior art exists, one of the purposes of the utility model is to provide a clutching mechanism for actuating system.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a clutch mechanism for a driving system comprises a coupling sleeve, a force releasing key, a clutch ring, rolling needles and a clutch gear, wherein the rolling needles are arranged on two sides of the clutch gear, the clutch ring is sleeved on one side of the rolling needles, the coupling sleeve is sleeved outside the clutch ring, the other end of the coupling sleeve is connected with an output wheel shaft of the driving system, and the force releasing key is installed between the coupling sleeve and the clutch ring.

By adopting the technical scheme, under the rotation of the clutch gear, the roller pin positioned on one side of the clutch gear rolls under the pushing of the clutch gear and drives the clutch ring sleeved outside the clutch gear to rotate, and under the driving of the clutch ring, the coupling sleeve drives the output wheel shaft to rotate, so that the electric control is realized; when the output wheel shaft rotates, the force releasing key drives the roller pins to rotate under the driving of the coupling sleeve, and the roller pins are separated from the clutch ring, so that the torque force of the clutch ring is prevented from being transmitted to the surface of the clutch gear, manual pushing is realized, and the use is convenient.

The present invention may be further configured in a preferred embodiment as: torsion output bosses are symmetrically distributed at two ends of the clutch gear, one or more pushing arms and one or more roller pin contact surfaces are arranged on the torsion output bosses, the roller pin contact surfaces are located on the side surfaces of the pushing arms, and the roller pins are located on the side surfaces of the roller pin contact surfaces.

By adopting the technical scheme, the needle roller contact surface drives the needle rollers to roll under the driving of the thrust arm, and the clutch ring is subjected to larger extrusion force under the action of the eccentric thrust of the needle roller contact surface of the needle rollers, so that the needle rollers push the clutch ring to rotate.

The present invention may be further configured in a preferred embodiment as: each rolling needle is arranged on the same side of the closest rolling needle contact surface along the circumferential direction of the torsion output boss, and the other side of the pushing arm is the force releasing key.

By adopting the technical scheme, when the thrust arm rotates towards one side of the roller pin, the roller pin contact surface pushes the roller pin to roll under the driving of the thrust arm, and the clutch ring rotates under the pushing of the roller pin to drive the coupling sleeve and the output gear to rotate; when the thrust arm rotates reversely, the thrust arm pushes the force releasing key to rotate, and the needle roller is separated from the clutch ring under the driving of the force releasing key, so that the coupling sleeve and the output gear are prevented from rotating reversely.

The present invention may be further configured in a preferred embodiment as: and needle roller contact surfaces are arranged on two sides of each pushing arm, and the needle rollers are arranged on the side surfaces of the needle roller contact surfaces.

Through adopting above-mentioned technical scheme, both sides all are provided with the thrust arm of kingpin, can drive the clutch ring and carry out clockwise or anticlockwise rotation to drive the output shaft and carry out clockwise or anticlockwise rotation.

The present invention may be further configured in a preferred embodiment as: the coupling shaft sleeve is characterized in that a gasket and an elastic sheet are further arranged inside the coupling shaft sleeve, the gasket and the elastic sheet are sequentially sleeved outside the output wheel shaft, one side of the elastic sheet is abutted against the coupling shaft sleeve, the other side of the elastic sheet is abutted against the gasket, and one side, far away from the elastic sheet, of the gasket is abutted against the force releasing key.

Through adopting above-mentioned technical scheme, at the in-process that uses, shell fragment and packing ring can effectively reduce the resistance between shaft coupling and the power of releasing key, especially when manual, and output wheel shaft only needs less power just can drive the power of releasing key and rotates convenient to use.

It is another object of the present invention to provide a drive system.

a driving system comprises the clutch mechanism, a driving piece and a speed change mechanism, wherein an output wheel shaft is arranged in the middle of a shell, the driving piece and the speed change mechanism are both arranged in the shell, the output end of the driving piece is connected with the speed change mechanism, and the speed change mechanism is connected with the clutch mechanism.

Through adopting above-mentioned technical scheme, under the drive of driving piece, speed change mechanism adjusts the speed after to drive clutching mechanism and be located the inside output shaft of clutching mechanism and rotate.

The present invention may be further configured in a preferred embodiment as: the output wheel shaft is connected with the shell through the bearing and the clamping spring.

Through adopting above-mentioned technical scheme, jump ring and bearing can improve the stability of being connected between casing and the output wheel axle.

The present invention may be further configured in a preferred embodiment as: the output wheel shaft is connected with the clutch gear through a connecting shaft.

Through adopting above-mentioned technical scheme, the connecting axle can improve the stability of being connected between output shaft and the separation and reunion gear, avoids in the course of working, takes place to interfere between output shaft and the separation and reunion gear, influences the normal operating of equipment.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the technical scheme of the clutch assembly consisting of the coupling sleeve, the release key, the clutch ring, the roller pin and the clutch gear is adopted, so that the roller pin can push the clutch ring to rotate under the driving of the clutch gear, the coupling sleeve is driven to rotate, the trolley is conveniently pushed to run, and the resistance generated by a driving system during the pushing can be reduced under the matching of the release key, so that the use is convenient;

2. the technical scheme of the clutch assembly consisting of the torque output boss, the pushing arm and the roller pin contact surface is adopted, so that the roller pin contact surface can drive the roller pin to roll under the driving of the pushing arm, a larger extrusion force is generated, and the effect of rotating the output wheel shaft is realized;

3. the technical scheme of the elastic sheet and the gasket arranged in the coupling sleeve is adopted, so that the resistance between the coupling sleeve and the force releasing key can be reduced, the speed during hand pushing is improved, and the effect of more convenient use is achieved.

Drawings

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which

Fig. 1 is a schematic view of the installation structure of the present invention.

Fig. 2 is a schematic diagram of an explosive structure according to the first embodiment.

Fig. 3 is a schematic view of a connection structure according to the first embodiment.

Fig. 4 is a schematic cross-sectional structure diagram of the first embodiment.

FIG. 5 is a schematic structural diagram of a clutch gear in the first embodiment.

FIG. 6 is a schematic view of a clockwise rotation connection according to an embodiment.

FIG. 7 is a schematic view of a counterclockwise rotating connection according to an embodiment.

FIG. 8 is a schematic view of the rotary connection structure of the second embodiment.

The reference numbers in the drawings are:

1: a wheeled vehicle; 2: a wheel; 3: a drive system; 4: an output axle; 4A: a first output axle; 4B: a second output axle; 4 a: a flat step; 5. a coupling sleeve; 5-a1, 5-a 2: a stopper; 5-b: a flat aperture; 6: releasing the power key; 6-a: a boss; 6-b1, 6-b2, 6-b3, 6-b 4: pushing the surface; 7: a clutch ring; 7-a: a cylindrical surface; 7-b1, 7-b 2: a pushing handle; 8: rolling needles; 9: a clutch gear; 9-a1, 9-a 2: a torque output boss; 9-b1, 9-b 2: a thrust arm; 9-c1, 9-c2, 9-c3, 9-c 4: a needle roller contact surface; 10: a connecting shaft; 11: a bearing; 12: a clamp spring; 13: a drive member; 14: a housing; 14A: a first housing; 14B: a second housing; 16: a speed change mechanism; 17: a gasket; 18: a spring plate; 19: and (4) screws.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

referring to fig. 2-4, for the utility model discloses a driving system, including casing 14, driving piece 13, speed change mechanism 16, clutching mechanism and output shaft 4, casing 14 comprises first casing 14A and second casing 14B, and output shaft 4 comprises first output shaft 44A and second output shaft 44B, and in this embodiment, driving piece 13 adopts servo motor, and it can forward reverse rotation, convenient to use, in other embodiments, also can adopt other drive structures. The driving member 13 is installed at one side of the housing 14B, the first output wheel axle 4A is installed at the middle of the first housing 14A, the second output wheel axle 14B is installed at the middle of the second housing 14B, both are located on the same axis, and the output end of the driving member 13 is located inside the housing 14B and is fixedly connected with the speed change mechanism 16. In the present example, the speed change mechanism 16 employs a motor gear, and in other embodiments, the speed change mechanism 16 includes, but is not limited to, one or more gears, a belt drive, a chain drive, and the like. The other end of the speed change mechanism is connected with the clutch mechanism.

The clutch mechanism comprises a coupling sleeve 5, a releasing key 6, clutch rings 7, rolling needles 8 and clutch gears 9, wherein the clutch gears 9 are positioned in the middle of the shell 4, the outer side surfaces of the clutch gears 9 are meshed with the speed change mechanism 16, the clutch rings 7 are sleeved on two sides of each clutch gear 9, the releasing key 6 and the rolling needles 8 are arranged in each clutch ring 7, the clutch gears 9 on one sides of the releasing keys 6 are abutted, the coupling sleeve 5 is arranged on the other side of the releasing keys 6, and one side of the coupling sleeve 5, which is far away from the releasing keys 6, is connected with the output wheel shaft 4. Under the drive of driving piece 13, clutching gear 9 rotates to drive kingpin 8 to roll, produces great torsion at rolling process, promotes clutch ring 7 and rotates, and the coupling sleeve 5 that is located the clutch ring 7 outside drives output shaft 4 and rotates under the promotion of clutch ring 7, and the structure that the symmetry set up has the synchronism height, and the output shaft 4 atress of both sides is more balanced moreover.

Referring to fig. 2, in order to improve the stability of the connection of the equipment, a flat step 4a is arranged on the outer side of the output wheel shaft 4, a flat hole 5-b is formed in the inner portion of one side of the small ring of the coupling sleeve 5, and the flat step 4a is inserted into the flat hole 5-b, so that the stability of the connection between the output wheel shaft 4 and the coupling sleeve 5 is improved, and the separation between the output wheel shaft and the coupling sleeve 5 is avoided in the driving process.

Referring to fig. 5, the middle of two sides of the clutch gear 9 is respectively provided with a torque output boss 9-a1 and a torque output boss 9-a2 extending outwards, each torque output boss 9-a1 and 9-a2 is provided with one or more thrust arms 9-b1 and 9-b2 extending outwards, in the present embodiment, the number of the thrust arms 9-b1 and 9-b2 is two, the side surfaces of the thrust arms 9-b1 and 9-b2 are provided with one or more needle roller contact surfaces 9-c1, 9-c2, 9-c3 and 9-c4, in the present embodiment, two sides of each thrust arm 9-b1 and 9-b2 are provided with needle roller contact surfaces 9-c1, 9-c2, 9-c3 and 9-c4, wherein two sides of the thrust arm 9-b1 are needle roller contact surfaces 9-c1 and 9-c1, 9-c2, the two sides of the thrust arm 9-b2 are provided with needle roller contact surfaces 9-c3 and 9-c4, and the two sides are provided with needle roller contact surfaces 9-c1, 9-c2, 9-c3 and thrust arms 9-b1 and 9-b2 of 9-c4, so that the forward and reverse rotation of the equipment can be realized, and the use is convenient.

Referring to fig. 2, in order to improve the pushing efficiency of the equipment, the inner side of the clutch ring 7 adopts a cylindrical surface 7-a, and the outer side of the clutch ring 7 extends with a group of symmetrically arranged pushers 7-b1 and 7-b2, wherein the needle roller 8 is abutted against the cylindrical surface 7-a; a group of symmetrically arranged stop blocks 5-a1 and 5-a2 extend from the inner side surface of the coupling sleeve 5, push handles 7-b1 and 7-b2 are respectively positioned at two sides of the stop blocks 5-a1, and under the matching of the push handles 7-b1 and 7-b2 with the stop blocks 5-a1 and the stop blocks 5-a2, the coupling sleeve 5 is convenient to push to rotate.

Referring to fig. 2 and 6, the release key 6 extends to a boss 6-a towards one side of the coupling sleeve 5, the side surface of the boss 6-a is provided with pushing surfaces 6-b1, 6-b2, 6-b3 and 6-b4, and the pushing surfaces 6-b1, 6-b2, 6-b3 and 6-b4 on the surface of the boss 6-a drive the roller pins 8 to rotate under the drive of the coupling sleeve 5, so that the roller pins 8 are separated from the clutch ring 7, and the clutch ring 7 is prevented from rotating and interfering during manual operation. The coupling sleeve 5 is also internally provided with an elastic sheet 18 and a gasket 17, one side of the elastic sheet 18 is abutted against the inner side surface of the coupling sleeve 5, the other side of the elastic sheet is abutted against one side of the gasket 17, which is far away from the elastic sheet 18, is abutted against a boss 6-a of the force-releasing key 6, and under the driving of the elastic sheet 18 and the gasket 17, a small resistance exists between the coupling sleeve 5 and the force-releasing key 6, so that the force-releasing key 6 is pushed to rotate, and the efficiency is high. In order to further reduce the resistance between the coupling sleeve 5 and the release key 6, ratchet teeth are added on the side of the release key 6 close to the washer 17, ratchet teeth are also added on the side of the washer 17 close to the release key 6, and the washer 17 and the release key 6 are in contact with each other through meshed ratchet teeth. The central hole of the washer 17 is a flat hole and is sleeved on the flat step 4a of the output wheel shaft 4, and the shell of the washer 17 can move up and down along the center of the output wheel shaft 4. When the torque force for rotating the output wheel shaft 14 is large, the ratchet teeth on the release key 6 and the ratchet teeth on the gasket 17 are separated from each other against the pressure of the elastic sheet 18, and the excessive torque force is prevented from being transmitted from the output wheel shaft 4 to the release key 6.

In order to further improve the stability of the connection of the equipment, the housing 14 is fixed by a screw 19, bearings 11 are arranged at two ends of the inside of the housing 14, and a snap spring 12 is arranged at a bayonet on the outer side of the housing 14 and used for improving the stability of the connection between the housing 14 and the output wheel shaft 4. The middle part of the clutch gear 9 is provided with a connecting shaft 10, and one end of the connecting shaft 10, which is far away from the clutch gear 9, is rotationally connected with the output wheel shaft 4, so that the stability of the equipment is kept.

Referring to fig. 6, under the driving of the driving element 13, the speed change mechanism 16 drives the clutch gear 9 to rotate clockwise, wherein wedge-like structures are configured between the cylindrical surface 7-a and the needle roller contact surfaces 9-c1, 9-c2, 9-c3 and 9-c4, when the clutch gear 9 is forced to rotate clockwise, the cylindrical surface 7-a is subjected to a large extrusion force under the eccentric thrust action of the needle roller contact surfaces 9-c1 and 9-c3 of the needle roller 8, so that the needle roller 8 pushes the clutch ring 7 to rotate clockwise, and the push handles 7-b1 and 7-b2 on the outer side of the clutch ring 7 push the coupling sleeve 5 to rotate, so that the output wheel shaft 4 is driven to rotate clockwise.

Referring to fig. 7, under the driving of the driving element 13, the speed change mechanism 16 drives the clutch gear 9 to rotate counterclockwise, wherein wedge-like structures are configured between the cylindrical surface 7-a and the needle roller contact surfaces 9-c1, 9-c2, 9-c3 and 9-c4, when the clutch gear 9 is forced to rotate counterclockwise, under the eccentric thrust action of the needle roller contact surfaces 9-c1 and 9-c3 of the needle roller 8, the cylindrical surface 7-a is subjected to a large extrusion force, so that the needle roller 8 pushes the clutch ring 7 to rotate counterclockwise, and the push hands 7-b1 and 7-b2 outside the clutch ring 7 push the coupling sleeve 5 to rotate, so as to drive the output wheel shaft 4 to rotate counterclockwise.

When the driving piece 13 is powered off and does not work, and the output wheel shaft 4 is forced to rotate, the flat hole 5-b drives the coupling sleeve 5 to rotate along with the output wheel shaft 4 under the drive of the flat step 4-a. An elastic sheet 18 and a washer 17 are assembled between the coupling sleeve 5 and the release key 6, and a flat center hole of the washer 17 is connected with and movable along a flat step 4-a. When the torque force for rotating the output wheel shaft 4 is large, the ratchet on the releasing key 6 and the ratchet on the gasket 17 are separated from each other against the pressure of the elastic sheet 18. Excessive torque transmission from the output hub 4 to the release key 6 is avoided. So that a small torsion exists between the output wheel shaft 4 and the releasing key 6 to push the releasing key 6 to rotate. When the power releasing key 6 rotates, the pushing surfaces 6-b1, 6-b2, 6-b3 and 6-b4 push the roller pins 8 to be close to the pushing arms 9-b1 and 9-b2 on the clutch gear 9, a small gap exists between the roller pins 8 and the inner cylindrical surface 7-a of the clutch ring 7, and the torsion of the clutch ring 7 cannot be transmitted to the clutch gear 9 through the roller pins 8, so that the functions that the output wheel shaft 4 rotates under stress and the motor shaft does not rotate are realized.

Referring to fig. 1, a driving system 3 is installed at the bottom of a hand-push wheeled vehicle 1, and the output end of the driving system is connected with wheels 2, so that the switching between an electric mode and a manual mode is realized.

Example two:

referring to fig. 8, the difference between this embodiment and the first embodiment is that the number of the pushing arms 9-b1, 9-b2 and the number of the needle rollers 8 are two, and the needle rollers 8 are located on the clockwise or counterclockwise side of the pushing arms 9-b1, 9-b2, so that the device can perform unidirectional motion, the driving member 13 can transmit the torque to the output wheel shaft 4 only in one rotation direction, and the output wheel shaft 4 cannot rotate when the driving member 13 rotates in the other rotation direction.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A clutch mechanism for a drive system, characterized in that: the clutch mechanism comprises a coupling sleeve (5), a force releasing key (6), a clutch ring (7), rolling needles (8) and a clutch gear (9), wherein the rolling needles (8) are arranged on two sides of the clutch gear (9), the clutch ring (7) is sleeved on one side of the rolling needles (8), the coupling sleeve (5) is sleeved on the outer portion of the clutch ring (7), the other end of the coupling sleeve (5) is connected with an output wheel shaft (4) of a driving system, and the force releasing key (6) is installed between the coupling sleeve (5) and the clutch ring (7).

2. A clutch mechanism for a drive system according to claim 1, wherein: torsion output bosses (9-a1, 9-a2) are symmetrically distributed at two ends of the clutch gear (9), one or more pushing arms (9-b1, 9-b2) and one or more needle roller contact surfaces (9-c1, 9-c2, 9-c3, 9-c4) are arranged on the torsion output bosses (9-a1, 9-a2), the needle roller contact surfaces (9-c1, 9-c2, 9-c3, 9-c4) are located on the side faces of the pushing arms (9-b1, 9-b2), and the needle rollers (8) are located on the side faces of the needle roller contact surfaces (9-c1, 9-c2, 9-c3, 9-c 4).

3. A clutch mechanism for a drive system according to claim 2, wherein: each needle roller (8) is arranged on the same side of the closest needle roller contact surface (9-c1, 9-c2, 9-c3, 9-c4) along the circumferential direction of the torsion output boss (9-a1, 9-a2), and the other side of the pushing arm (9-b1, 9-b2) is the releasing key (6).

4. A clutch mechanism for a drive system according to claim 2, wherein: the two sides of each pushing arm (9-b1, 9-b2) are provided with needle roller contact surfaces (9-c1, 9-c2, 9-c3, 9-c4), and the lateral surfaces of each needle roller contact surface (9-c1, 9-c2, 9-c3, 9-c4) are provided with the needle rollers (8).

5. A clutch mechanism for a drive system according to claim 1, wherein: the coupling sleeve (5) is further internally provided with a gasket (17) and an elastic sheet (18), the gasket (17) and the elastic sheet (18) are sequentially sleeved outside the output wheel shaft (4), one side of the elastic sheet (18) is abutted against the coupling sleeve (5), the other side of the elastic sheet is abutted against the gasket (17), and one side, far away from the elastic sheet (18), of the gasket (17) is abutted against the force releasing key (6).

6. A drive system, characterized by: comprising the clutch mechanism of any one of claims 1 to 5, and a driving member (13), a housing (14), a speed change mechanism (16) and an output axle (4), wherein the output axle (4) is installed in the middle of the housing (14), the driving member (13) and the speed change mechanism (16) are both installed in the housing (14), the output end of the driving member (13) is connected with the speed change mechanism (16), and the speed change mechanism (16) is connected with the clutch mechanism.

7. A drive system according to claim 6, wherein: the output wheel shaft (4) is connected with the clutch gear (9) through a connecting shaft (10).

8. A drive system according to claim 6, wherein: a bearing (11) and a clamping spring (12) are arranged inside the shell (14), and the output wheel shaft (4) is connected with the shell (14) through the bearing (11) and the clamping spring (12).